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Fronius Primo 8.2-1 vs SG8.0RT-20 4 of 18 identical Swap Change inverters

Fronius Primo 8.2-1 vs Sungrow SG8.0RT-20

Fronius Primo 8.2-1
Fronius International
Fronius Primo 8.2-1
8.2 kW Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow SG8.0RT-20
Sungrow
SG8.0RT-20
8 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG8.0RT-20 leads on the differences that matter

The largest is rated ac power: 0.20 kW apart. 4 of 18 comparable parameters are identical, with 14 more left out because at least one datasheet does not publish them.

See all 14 differences
How alike are they
4 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

14 of 18 parameters
Parameter Fronius Primo 8.2-1 SG8.0RT-20 Difference
Rated AC power 8.20 kW 8.00 kW 0.20 kW apart
Max DC voltage 1000 V 1100 V 100 V apart
Max input current per tracker 33.0 A 25.0 A 8.0 A more headroom
Max efficiency 97.0 % 98.5 % 1.5 pp more efficient
Weight 21.4 kg 17.0 kg 4.4 kg lighter
Max AC power 8.20 kW 8.00 kW 0.20 kW apart
Weight per kW 2.6 kg/kW 2.1 kg/kW 0.5 kg/kW lighter
Grid connection Single-phase 3-phase Single-phase vs 3-phase
Nominal AC voltage 240 V 400 V 160 V apart
Max AC current 34.2 A 13.3 A 20.9 A apart
Start voltage 80 V 180 V 100 V earlier start
Ingress protection NEMA 4X IP65 NEMA 4X vs IP65
MPPT voltage range 200-800 V 160-1000 V 200-800 V vs 160-1000 V
Dimensions 627x429x206 mm 480x370x195 mm 627x429x206 mm vs 480x370x195 mm
02

Full specification

Parameter Fronius Primo 8.2-1 SG8.0RT-20 Difference
AC output
Rated AC power 8.20 kW 8.00 kW 0.20 kW apart
Max AC power 8.20 kW 8.00 kW 0.20 kW apart
Grid connection Single-phase 3-phase Single-phase vs 3-phase
Nominal AC voltage 240 V 400 V 160 V apart
Max AC current 34.2 A 13.3 A 20.9 A apart
PV input
Max PV power - - Neither datasheet publishes this
DC/AC ratio - - Neither datasheet publishes this
Max DC voltage 1000 V 1100 V 100 V apart
MPPT voltage range 200-800 V 160-1000 V 200-800 V vs 160-1000 V
Start voltage 80 V 180 V -100 V for Fronius Primo 8.2-1
MPP trackers 2 2 Same
Strings per tracker - 1 Not published by Fronius International
Max input current per tracker 33.0 A 25.0 A +8.0 A for Fronius Primo 8.2-1
Efficiency
European efficiency - 98.0 % Not published by Fronius International
Max efficiency 97.0 % 98.5 % +1.5 pp for SG8.0RT-20
CEC efficiency 96.5 % - Not published by Sungrow
Battery
Battery input - - Neither datasheet publishes this
Battery voltage - - Neither datasheet publishes this
Max charge current - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 21.4 kg 17.0 kg -4.4 kg for SG8.0RT-20
Weight per kW 2.6 kg/kW 2.1 kg/kW -0.5 kg/kW for SG8.0RT-20
Dimensions 627x429x206 mm 480x370x195 mm 627x429x206 mm vs 480x370x195 mm
Ingress protection NEMA 4X IP65 NEMA 4X vs IP65
Cooling forced-air forced-air Same
Noise - - Neither datasheet publishes this
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes - Not published by Sungrow
Ethernet Yes - Not published by Sungrow
Arc fault protection Yes - Not published by Sungrow
Integrated DC switch Yes Yes Same
Warranty
Warranty 10 yrs - Not published by Sungrow
03

More useful comparisons

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8 differences, the largest is max input current per tracker
04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.